National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Nest defence and predator recognition by Arctic tern \kur{(Sterna paradisaea)}
ŠPIČKA, Jan
In the presented work, I describe the behaviour of Arctic terns (Sterna paradisaea) toward predator species that differ in the threat they represent to them and to their nests. I presented textile dummies of great black-backed gull (Larus marinus), peregrine falcon (Falco peregrinus), common raven (Corvus corax) and common eider (Somateria mollissima), piece of wood as a harmless stimulus, and human intruder in sitting position near the tern nests. Experiments were conducted on the Varanger peninsula in Norway. The tern behaviour was recorded and analysed to see any dummy species related differences.

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